A Matter-of-Fact Magic Book: The Witch at the Window (A Stepping Stone Book(TM))

For decades, Ruth Chew’s classic chapter books full of everyday magic have enchanted early readers. Now that they are in print again, a new generation can fall under her spell and fall in love with reading.
 
Why did a witch appear at Nick’s window?
 
Could it have something to do with a mysterious tree in Prospect Park? Ever since Nick and Marjorie discovered it, strange things have been happening. First, they find an odd spoon with no owner. Then a spooky bird follows them home—and talks to them! It must be the witch’s magic!
 
But where has she vanished to? And what is she looking for?